All tools

Date calculator

Days, weeks, business days and years/months/days between two dates, plus a date N days/weeks/months/years from any date.

Age calculator

Exact age in years, months and days at any date, days until your next birthday and total days lived.

Countdown calculator

Days until (or since) any date, plus the dates of your 100th, 365th, 1000th day and yearly anniversaries.

Business days calculator

Working days between two dates excluding weekends and the 11 federal holidays, and the date N business days from any date.

Day of the week calculator

Find the weekday of any date, see which weekday the same day-of-month falls on for all 12 months, and a 10-year view of a date's weekday.

Hours calculator

Enter clock-in, clock-out and break for each day to get daily hours and the total in h:mm and decimal (7.5 h). Overnight shifts supported; multiply by an hourly rate.

Percentage calculator

Five calculations on one page: X% of Y, X is what % of Y, percent change, add/subtract a percentage (and reverse), percentage-point difference.

US federal holiday and long weekend planner

Every US federal holiday with the date offices actually close, the long weekends that form on their own, and the best places to spend 1 to 3 days of leave. Computed from 5 U.S.C. 6103, so any year works.

Discount calculator

Sale price from list price and %, discount rate from two prices, the real rate of stacked discounts like 30% + 20%, and percent-off vs. coupon order.

Unit converter

Square meters ↔ square feet, acres, hectares and Korean pyeong; meters ↔ feet and miles; kilograms ↔ pounds and ounces; liters ↔ gallons. Exact international factors with sources.

Pay & work

US paycheck calculator 2026

Per-paycheck and annual take-home for 2026: IRS brackets and standard deduction, Social Security up to $184,500, Medicare incl. the 0.9% surtax, an optional user-entered state tax estimate, 401(k) and pre-tax benefits.

California paycheck calculator 2026

Per-paycheck and annual take-home in California for 2026: federal tax and FICA plus CA withholding from the EDD Method B annual tables and SDI at 1.3% with no cap, with 401(k) and pre-tax benefits.

New York paycheck calculator 2026

Per-paycheck and annual take-home in New York for 2026: federal tax and FICA plus NY State tax from the 2026 IT-2105-I schedules, optional NYC resident tax, PFL 0.432% (max $411.91) and DBL, with 401(k) and pre-tax benefits.

Hourly to salary calculator

Convert an hourly wage to yearly, monthly, semimonthly, biweekly, weekly and daily pay, or a salary back to hourly, on a 2,080-hour year you can adjust.

Overtime pay calculator (FLSA)

Weekly pay with FLSA overtime over 40 hours at 1.5× the regular rate, including nondiscretionary bonuses, optional state daily overtime and double time.

Tax

Estate tax calculator

US federal estate tax from the gross estate, debts, marital and charitable deductions and lifetime gifts, using the 2026 basic exclusion of $15,000,000, the section 2001(c) schedule and the unified credit, with portability.

Gift tax calculator

US federal gift tax: what the $19,000 annual exclusion covers for 2026, what must be reported on Form 709, how much lifetime exclusion remains and whether any tax is actually due, including gift splitting.

US sales tax calculator 2026

Add sales tax to a price or back it out of a receipt with July 2026 state, average local and combined rates for all 50 states and DC, or your own local rate. Full state table included.

Self-employment tax calculator 2026

Schedule SE tax (15.3% of 92.35% of profit, $184,500 wage base), the deductible half, 20% QBI, 2026 federal income tax and quarterly 1040-ES payments with the 90/100/110% safe harbor.

Loans & savings

Loans & savings

Compound interest calculator

Growth of a starting balance plus monthly contributions over time, with the value in today money after inflation, the after-tax figure, a year-by-year table, the rule of 72 and a reverse calculation from a target.

Loans & savings

Savings and deposit interest calculator

Maturity value of a monthly savings plan or a lump-sum deposit, with simple or monthly compounding, an editable tax rate for interest income and a reverse calculation from a target amount.

Loans & savings

Loan repayment calculator

Monthly payment, total interest and a full amortization schedule from the amount, rate and term. Equal-payment, equal-principal and interest-only repayment with an optional grace period, downloadable as CSV.

Property

Property

Rental yield calculator

Gross and net rental yield from price and rent, plus cash-on-cash return, monthly cash flow and break-even occupancy once closing costs, expenses, vacancy and mortgage interest are included.

Business & fees

Business & fees

Runway and burn rate calculator

How many months your cash lasts, with gross and net burn, a growth-adjusted runway, the break-even month and how much to cut or raise for a target runway.

Business & fees

Break-even point calculator

How many units cover your monthly fixed costs, from price and variable cost per unit, with the volume needed for a target profit, the margin of safety and a sensitivity table for price, variable and fixed cost changes.

Business & fees

Profit margin calculator

Margin and markup from cost and price, with marketplace commission, payment processing, per-order costs and sales tax deducted, plus target-margin pricing, break-even price and units needed to cover fixed costs.

Text and symbol tools

Colour converter

Converts between HEX, RGB and HSL with one-click copy, names the closest CSS colour, and measures text-to-background contrast with the W3C formula against the WCAG 2.2 thresholds. Also generates a lightness scale.

QR code generator

Turns a link, Wi-Fi login, contact card, phone number, text message, email or map coordinates into a QR code, saved as PNG or SVG. No shortener in the middle, so it never expires, and nothing you type leaves the browser.

Special characters

Special characters grouped by what you use them for, with one click to copy. Search by name when you do not know the symbol, and recently used ones stay at the top. Includes box-drawing characters and invisible spaces.

Character counter

Count characters, whitespace-separated words and UTF-8 bytes, with example length targets. Not a platform-limit validator.

Addresses & postal codes

Addresses & postal codes

United States postal code lookup

Find postal codes by city or neighborhood. No postal code input required.

Rates & tables

Rates & tables

Minimum wage by state

The federal minimum wage and every state and territory rate, taken from the Department of Labor table, with state-name search, regional and employer-size conditions, and gross pay comparisons.

Rates & tables