Start here
Which type of calculator do you need?
Start from the job you are trying to do β each row routes to a category hub with its own guide and full tool list, so you land in the right place before picking a specific calculator.
- I'm paving a driveway, lot or road with US asphaltAsphalt Calculators βtonnage, area, cost and unit conversions for hot-mix asphalt
- I'm laying or pricing a UK tarmac drivewayTarmac Calculators βtarmac quantity, sub-base and cost, priced per square metre
- I'm planning retirement, a mortgage payoff or a car loanFinance Calculators βretirement, payoff and loan tools using current IRS limits
- I'm budgeting an outdoor service or removal jobCost Calculators βservice-cost estimates with contingency guidance
- I need everyday, sport or materials mathsGeneral Calculators βrounding, ERA, bitumen and MOT Type 1 sub-base
- I need to convert between binary, decimal and hexMath Calculators βbinary, decimal, hex and octal converters with the working shown
- I'm predicting an AP exam scoreAP Score Calculators βCollege Board section weighting into a 1β5 estimate
- I'm working out a tip, splitting a bill, or figuring tax and gratuityTip Calculators βtip, split, and tax tools for restaurants, salons and delivery
Asphalt Calculators
11 toolsProfessional paving estimation tools for tonnage, volume, area, cost, and unit conversionsβbuilt for contractors and homeowners alike.
Asphalt Tonnage Calculator
Asphalt tons for a driveway, parking lot or overlay, with waste, price per ton, and tonnes, pounds and cubic yards.
Open calculatorAsphalt Volume & Weight Calculator
Calculate asphalt volume in cubic yards, feet or meters, and convert a volume to weight in tons, pounds or tonnes.
Open calculatorAsphalt Square Footage & Area Calculator
Calculate square footage and total project area. Sum multiple rectangular sections.
Open calculatorAsphalt Driveway Cost Calculator
Estimate the cost of a new asphalt driveway, or price a parking lot or large area with separate material and labor rates.
Open calculatorAsphalt Repair Cost Calculator
Multiply a repair length and width in feet by your per-square-foot quote to get the patch area and a total repair budget.
Open calculatorAsphalt Resurfacing & Overlay Cost Calculator
Calculate the cost of resurfacing or overlaying your asphalt.
Open calculatorAsphalt Milling Cost Calculator
Price milling off worn asphalt from the area in square feet, a per-square-foot rate and a flat haul-off fee, with the cost split shown.
Open calculatorAsphalt Road Calculator
Tons of asphalt for a road or lane from lane width, length, layer thickness and mix density, with a 0β15% compaction allowance.
Open calculatorAsphalt Patch Calculator
Pounds of mix, 50 lb cold-mix bags and tons with waste to fill a pothole, from its length and width in feet and depth in inches.
Open calculatorAsphalt Tons to Cubic Yards Calculator
Convert asphalt tons to cubic yards, or cubic yards to tons, at your mix density.
Open calculatorAsphalt Tons to Square Feet Calculator
Calculate the surface area a tonnage covers, or the tons needed for an area.
Open calculator
Tarmac Calculators
4 toolsPrecision tools for tarmac driveway costs, material tonnage, sub-base requirements, and resurfacing estimatesβideal for UK and EU projects.
Tarmac Driveway Cost Calculator
Estimate the comprehensive cost of laying a new tarmac driveway.
Open calculatorTarmac Quantity Calculator
Tonnes, cubic metres and kilograms of hot mix tarmac for an area in metres, a depth in mm, cm or inches, and a density and wastage choice.
Open calculatorTarmac Repair Cost Calculator
Estimate costs for tarmac patching, resurfacing, or replacement.
Open calculatorTarmac Surface Cost Calculator
Calculate specialized tarmac surfacing costs for car parks, pathways, and private roads.
Open calculator
Finance Calculators
14 toolsPlan your financial future with tools for car and personal loans, mortgages, aircraft financing, CD earnings, and retirement accounts.
Aircraft Finance Calculator
Monthly payment, total interest and amount financed on an aircraft loan, from price, down payment, optional sales tax, rate and term.
Open calculatorCD Calculator
Calculate CD maturity value, interest earned, after-tax return, and CD ladder performance.
Open calculatorMortgage Payoff Calculator
Calculate how extra mortgage payments, biweekly payments, and lump sums can reduce your mortgage term and save interest.
Open calculator401k Calculator
Calculate how much you can save for retirement with a 401k.
Open calculator401k Contribution Calculator
See what a 401(k) contribution rate costs in take-home pay each paycheck, after federal tax savings and employer match, against the IRS limit.
Open calculator401k Loan Calculator
Calculate your 401(k) loan monthly payment, full amortization schedule, and the real opportunity cost of borrowing from your retirement account. Follows US IRS Β§72(p) rules including the $50,000 cap and 5-year maximum term.
Open calculatorRoth Vs. Traditional 401k Calculator
Compare Roth vs Traditional 401(k) contributions to see which one is better for you.
Open calculator401k Employer Match Calculator
Calculate how much your employer will match your 401k contributions.
Open calculatorSolo 401k Calculator
Net business profit and age give your Solo 401(k) employee deferral, profit-sharing limit and Β§415 headroom, after self-employment tax.
Open calculator401K Retirement Calculator
Calculate your 401(k) retirement savings goals and track your progress.
Open calculator401k Early Withdrawal Calculator
Calculate the penalty and tax implications of early 401(k) withdrawals.
Open calculatorOvertime Pay Calculator
Work out your overtime rate and gross weekly pay under the federal 40-hour rule, with double time and pay-period projections.
Open calculatorAuto & Personal Loan Calculator
Monthly payment, total interest and amortization for a car or personal loan, with trade-in, down payment, sales tax and dealer fees.
Open calculatorReverse Sales Tax Calculator
Recover the pre-tax price from a tax-inclusive total and a tax rate you supply, and see why subtracting the rate from the total gives the wrong answer.
Open calculator
Cost Calculators
1 toolA tree removal cost calculator, plus a router to the asphalt and tarmac cost calculators for driveway, resurfacing, repair and milling jobs.
General Calculators
6 toolsEveryday math tools covering scientific functions, sport statistics, rounding, and moreβfor students and professionals alike.
ERA Calculator
Turn earned runs and innings pitched, entered as innings plus outs or as a decimal, into runs allowed per nine innings to two or three decimals.
Open calculatorRounding Calculator
Round numbers to the nearest whole number, decimal, or significant figure.
Open calculatorScientific Calculator
Run trigonometry, logarithms, powers, roots and factorials in degrees or radians, with brackets, Ο and e.
Open calculatorProportion Calculator
Solve a/b = c/d for x with steps, test ratios and tables for proportionality, work direct and inverse proportion, scale recipes and maps, and split an amount in a ratio.
Open calculatorBitumen Calculator
Estimate bitumen quantity, volume, weight, asphalt binder content, spray rate, and roofing rolls.
Open calculatorMOT Type 1 Sub-Base Calculator
Estimate how much MOT Type 1 sub-base you need in tonnes and cubic metres, for a driveway, patio, path, shed base or the foundation under tarmac.
Open calculator
Math Calculators
9 toolsConvert numbers between binary, decimal, hexadecimal and octal, with every step of the working shownβexact for numbers of any size, free, with no sign-up.
Binary Converter
Convert between binary, decimal, hexadecimal, octal and any base from 2 to 36 as you type, exactly for numbers of any size, with step-by-step working.
Open calculatorBinary to Decimal Converter
Turn a binary number into decimal with every bit times its power of 2 worked out, plus hex and octal. Exact for 64-bit numbers and longer.
Open calculatorDecimal to Binary Converter
Turn a decimal number into binary with the repeated division by 2 shown row by row, plus hex, octal and the bits and bytes it needs.
Open calculatorBinary to Hex Converter
Convert binary to hexadecimal and back by grouping bits in fours, with each nibble's hex digit worked out. Exact for numbers of any length.
Open calculatorBinary to Text Converter
Decode binary bytes into text or encode text as binary, in UTF-8 or ASCII, with each character's code point and bytes listed.
Open calculatorTwo's Complement Calculator
Encode a signed number as an 8, 16, 32 or 64-bit two's complement pattern, or decode one, with invert-and-add-one steps and overflow checks.
Open calculatorIEEE 754 Floating-Point Converter
Convert a decimal to its 32-bit float or 64-bit double bits and back, with sign, exponent, mantissa and the exact value stored.
Open calculatorBinary Calculator
Add, subtract, multiply and divide binary numbers with the carries, borrows, partial products and long division shown.
Open calculatorBitwise Calculator
Work out AND, OR, XOR, NOT and bit shifts at 8, 16, 32 or 64 bits, from binary, hex or decimal, with every bit lined up.
Open calculator
AP Score Calculators
2 toolsEstimate your AP exam score using official College Board weighting for multiple-choice and free-response sections.
AP Biology Score Calculator
Turn multiple-choice correct out of 60 and six free-response scores, two long and four short, into a 50/50 composite and an estimated 1β5 score.
Open calculatorAP Chemistry Score Calculator
Enter multiple-choice correct out of 60 and seven free-response scores, three long and four short, to estimate a 1β5 score from the 50/50 weighting.
Open calculator
Tip Calculators
6 toolsWork out a fair tip, split a bill across a group, and account for sales tax on a restaurant, salon, or delivery orderβfree, with no sign-up.
Tip Calculator
Work out the tip on any bill, add sales tax, round the total up, or work backwards from a total you already paid.
Open calculatorHaircut & Salon Tip Calculator
Work out the tip for a haircut, colour, barber visit, manicure or pedicure, and split one tip between a stylist and an assistant.
Open calculatorBill Split Calculator
Split a bill evenly, by what each person ordered, or in proportion to income, and work out who owes whom.
Open calculatorTip Percentage Calculator
Pick a tip percentage and see what it means in dollars, check it against the published US tipping range, and scan a $5β$200 tip chart at 10%, 15%, 18%, 20% and 25%.
Open calculatorFood Delivery Tip Calculator
Work out the tip for a food, pizza or grocery delivery β kept separate from the delivery fee β with the published per-order minimum, plus takeout and pickup guidance.
Open calculatorTip and Sales Tax Calculator
Compare tipping on the pre-tax subtotal against tipping on the tax-inclusive total, see the difference in dollars, and check how an automatic gratuity interacts with sales tax.
Open calculator
Paycheck Calculators
44 toolsEstimate take-home pay after federal withholding, FICA, and state and local taxes, state by stateβfree, with no sign-up.
California Paycheck Calculator
Estimate California take-home pay after federal withholding, FICA, CA state income tax and SDI, for salaried and hourly paychecks.
Open calculatorPennsylvania Paycheck Calculator
Estimate Pennsylvania take-home pay after federal withholding, FICA, the flat 3.07% state tax, local EIT/LST and Philadelphia Wage Tax where they apply.
Open calculatorTexas Paycheck Calculator
Estimate Texas take-home pay after federal withholding and FICA β Texas has no state income tax, so this shows exactly where the rest of a paycheck goes.
Open calculatorAlaska Paycheck Calculator
Estimate Alaska take-home pay after federal withholding, FICA and the 0.50% Alaska unemployment deduction. Alaska has no state income tax.
Open calculatorFlorida Paycheck Calculator
Estimate Florida take-home pay after federal withholding and FICA. Florida has no state income tax, and hourly estimates start at the $15.00 minimum wage.
Open calculatorNevada Paycheck Calculator
Estimate Nevada take-home pay after federal withholding and FICA. Nevada has no state income tax, so this shows where the rest of a paycheck goes.
Open calculatorNew Hampshire Paycheck Calculator
Estimate New Hampshire take-home pay after federal withholding and FICA. New Hampshire has no income tax on wages and has repealed its interest tax.
Open calculatorSouth Dakota Paycheck Calculator
Estimate South Dakota take-home pay after federal withholding and FICA. South Dakota has no state income tax; the 2026 minimum wage is $11.85.
Open calculatorTennessee Paycheck Calculator
Estimate Tennessee take-home pay after federal withholding and FICA. Tennessee has no tax on wages, and its Hall tax on interest and dividends is repealed.
Open calculatorWashington Paycheck Calculator
Estimate Washington take-home pay after federal withholding, FICA, Paid Family and Medical Leave and WA Cares. Washington has no state income tax on wages.
Open calculatorWyoming Paycheck Calculator
Estimate Wyoming take-home pay after federal withholding and FICA. Wyoming has no individual income tax, and unemployment insurance is employer-funded.
Open calculatorArizona Paycheck Calculator
Estimate Arizona take-home pay after federal withholding, FICA and Arizona tax at the Form A-4 percentage you chose, or the 2.0% default with no A-4.
Open calculatorColorado Paycheck Calculator
Estimate Colorado take-home pay after federal withholding, FICA, the flat 4.40% state tax, the 0.44% FAMLI premium and Denver-area occupational privilege taxes.
Open calculatorGeorgia Paycheck Calculator
Estimate Georgia take-home pay after federal withholding, FICA and Georgia tax at the new 4.99% rate from May 11, 2026, with G-4 status and allowances.
Open calculatorIdaho Paycheck Calculator
Estimate Idaho take-home pay after federal withholding, FICA and Idaho's flat 5.3% tax, using the withholding charts revised on July 31, 2026.
Open calculatorIllinois Paycheck Calculator
Estimate Illinois take-home pay after federal withholding, FICA and the flat 4.95% Illinois tax, with IL-W-4 basic and additional allowances.
Open calculatorLouisiana Paycheck Calculator
Estimate Louisiana take-home pay after federal withholding, FICA and Louisiana tax, withheld at 3.09% after the 2026 L-4 standard deduction.
Open calculatorNorth Carolina Paycheck Calculator
Estimate North Carolina take-home pay after federal withholding, FICA and the 3.99% state tax, withheld at 4.09% with NC-4 filing status and allowances.
Open calculatorUtah Paycheck Calculator
Estimate Utah take-home pay after federal withholding, FICA and Utah's new 4.45% flat tax, using the Tax Commission's June 1, 2026 withholding schedules.
Open calculatorAlabama Paycheck Calculator
Estimate Alabama take-home pay after federal withholding, FICA, Alabama's 2%β5% tax (which deducts your federal withholding) and city occupational taxes such as Birmingham's 1%.
Open calculatorArkansas Paycheck Calculator
Estimate Arkansas take-home pay after federal withholding, FICA and Arkansas tax up to 3.9%, using the DFA's 2026 formula method and AR4EC exemptions.
Open calculatorConnecticut Paycheck Calculator
Estimate Connecticut take-home pay after federal withholding, FICA, Connecticut tax from 2% to 6.99% by CT-W4 code, and the 0.5% CT Paid Leave contribution.
Open calculatorDelaware Paycheck Calculator
Estimate Delaware take-home pay after federal withholding, FICA, Delaware tax from 2.2% to 6.6%, Delaware Paid Leave and Wilmington's 1.25% city wage tax.
Open calculatorDistrict of Columbia Paycheck Calculator
Estimate Washington, DC take-home pay after federal withholding, FICA and DC income tax from 4% to 10.75%, using the 2026 rate schedule and D-4 allowances.
Open calculatorHawaii Paycheck Calculator
Estimate Hawaii take-home pay after federal withholding, FICA, Hawaii tax with the new $4,350 extra allowance for 2026, and the TDI deduction.
Open calculatorKansas Paycheck Calculator
Estimate Kansas take-home pay after federal withholding, FICA and Kansas tax at 5.2% and 5.58%, with K-4 allowance rate and allowances.
Open calculatorMaine Paycheck Calculator
Estimate Maine take-home pay after federal withholding, FICA, Maine tax with the revised August 2026 tables, and the Paid Family and Medical Leave contribution.
Open calculatorMinnesota Paycheck Calculator
Estimate Minnesota take-home pay after federal withholding, FICA, Minnesota tax from 5.35% to 9.85% and the new 2026 Minnesota Paid Leave premium.
Open calculatorMontana Paycheck Calculator
Estimate Montana take-home pay after federal withholding, FICA and Montana tax at 4.7% and the new 5.65% top rate, using the 2026 MW-4 tables.
Open calculatorMaryland Paycheck Calculator
Estimate Maryland take-home pay after federal withholding, FICA, Maryland tax from 2% to 6.5% and the required county income tax, with 2026 rates for all 23 counties and Baltimore City.
Open calculatorMissouri Paycheck Calculator
Estimate Missouri take-home pay after federal withholding, FICA, Missouri tax up to 4.7% under the 2026 withholding formula, and the Kansas City or St. Louis 1% earnings tax.
Open calculatorNew York Paycheck Calculator
Estimate New York take-home pay after federal withholding, FICA, New York tax from 3.9% to 10.9%, NYC and Yonkers taxes, Paid Family Leave and disability insurance.
Open calculatorOregon Paycheck Calculator
Estimate Oregon take-home pay after federal withholding, FICA, Oregon tax up to 9.9% with its federal-tax subtraction, Paid Leave Oregon, the transit tax and Portland-area Metro and PFA taxes.
Open calculatorNebraska Paycheck Calculator
Estimate Nebraska take-home pay after federal withholding, FICA and Nebraska tax from 2.46% to 4.55%, using the 2026 Circular EN tables and W-4N allowances.
Open calculatorNew Jersey Paycheck Calculator
Estimate New Jersey take-home pay after federal withholding, FICA, New Jersey tax from 1.4% to 10.75% by NJ-W4 rate table, and UI, DI and FLI deductions.
Open calculatorNew Mexico Paycheck Calculator
Estimate New Mexico take-home pay after federal withholding, FICA and New Mexico tax from 1.5% to 5.9%, using the 2026 FYI-104 withholding tables.
Open calculatorNorth Dakota Paycheck Calculator
Estimate North Dakota take-home pay after federal withholding, FICA and North Dakota tax of 0%, 1.95% and 2.5%, using the 2026 withholding tables.
Open calculatorOklahoma Paycheck Calculator
Estimate Oklahoma take-home pay after federal withholding, FICA and Oklahoma tax at the new 2026 rates up to 4.5%, using the OW-2 tables and OK-W-4.
Open calculatorRhode Island Paycheck Calculator
Estimate Rhode Island take-home pay after federal withholding, FICA, Rhode Island tax from 3.75% to 5.99%, and the 1.1% TDI/TCI deduction.
Open calculatorSouth Carolina Paycheck Calculator
Estimate South Carolina take-home pay after federal withholding, FICA and South Carolina tax, using SCDOR's 2026 withholding formula and SC W-4 allowances.
Open calculatorVermont Paycheck Calculator
Estimate Vermont take-home pay after federal withholding, FICA and Vermont tax from 3.35% to 8.75%, using the 2026 GB-1210 tables and W-4VT allowances.
Open calculatorVirginia Paycheck Calculator
Estimate Virginia take-home pay after federal withholding, FICA and Virginia tax from 2% to 5.75%, using Virginia Tax's withholding formula and VA-4 exemptions.
Open calculatorWest Virginia Paycheck Calculator
Estimate West Virginia take-home pay after federal withholding, FICA, West Virginia tax at the 2026 cut rates, and Charleston, Huntington or Morgantown city fees.
Open calculatorWisconsin Paycheck Calculator
Estimate Wisconsin take-home pay after federal withholding, FICA and Wisconsin tax from 3.5% to 7.65%, using the W-166 withholding formula and WT-4 exemptions.
Open calculator
What you'll find here
This is the index for the whole site. Every tool is purpose-built for one task and grouped with the others that share its method: the paving and materials categories turn measured dimensions into tonnage and cost using industry-standard densities; the finance category applies current IRS contribution limits and the standard amortization formula; and the general and AP categories cover everyday maths and exam scoring. None require an account, and all work on any screen.
Each category has its own hub page β reached from the tool chooser above or the βView category pageβ link on each section β where the shared method, the reference figures and the assumptions behind those tools are set out in full. This page keeps the depth on those hubs rather than repeating it, so start here to find the right area, then follow through to the category for the detail.
Frequently asked questions
Are all these calculators free to use?
Yesβevery calculator on OtherCalculators.com is 100% free to use with no sign-up, no subscription, and no hidden fees. We are supported by non-intrusive advertising.
How accurate are the calculation results?
Our calculators use industry-standard formulas and regularly reviewed input constants (e.g., asphalt density, interest compounding methods). Results are highly accurate for planning and estimation. For final project execution or legal/financial decisions, always supplement with professional advice.
How is the calculator library organized?
The tools are grouped into 9 categories by the job they do: Asphalt and Tarmac for paving and materials, Finance for money decisions (retirement, mortgage payoff, car and personal loans), Paycheck for US take-home pay by state, Cost for outdoor service budgeting, General for everyday and sport maths, AP for exam-score prediction, and Tip for restaurant, salon and delivery gratuity. Each category has its own hub page with a full guide, and the tool chooser above routes you to the right category from what you are trying to do.
Which calculator should I use for my paving project?
Start with the Asphalt Tonnage Calculator or Tarmac Quantity Calculator to determine how much material you need. Then use the corresponding cost calculator (e.g., Asphalt Driveway Cost Calculator) to estimate your budget. For UK projects using bitumen macadam, the Tarmac calculators use UK-standard metrics.
Can I use these tools on my phone?
Absolutely. All calculators are fully mobile-responsive and work on any screen sizeβsmartphone, tablet, or desktopβwithout needing to install an app.
Where is the car and personal loan calculator?
The Auto & Personal Loan Calculator is in the Finance category, next to the mortgage payoff, 401(k) loan and aircraft finance calculators. It handles standard amortization for a car or personal loan, with trade-in, down payment, sales tax and dealer fees. The rest of Finance covers mortgages, investment products like CDs, and retirement planning (401k).
How do AP score calculators work?
Our AP Score Calculators use the official College Board section weightings and score conversion tables to translate your estimated multiple-choice and free-response performance into a predicted 1β5 AP score. Results are estimates and may vary based on the specific year's score distribution.
Estimates & assumptions
- Every result on this site is an estimate for planning, not a quote, a bid, or a guaranteed figure. Confirm anything you will act on against a professional or an official source.
- Paving, tarmac and cost figures vary with region, supplier pricing, season and site conditions. Treat them as a baseline for comparing real quotes.
- The finance tools apply published IRS limits and standard formulas, but your plan document, lender terms and tax position govern the real numbers.
- AP score estimates use College Board section weightings; the exact raw-to-1β5 conversion is set per exam year and is not published in advance.
These calculators produce estimates for planning and education only. They are not financial, tax, legal, or engineering advice. Confirm any figure with a qualified professional before you rely on it.