Business & Calculators
Work out costs, conversions and everyday numbers.
6 tools ready to help
Clear filtersBusiness Calculator
Calculate percentages, discounts, margins, markups, ROI and break-even units.
Input Value A
Output Copy or download the actual result
Number Base Converter
Convert arbitrarily large integers between bases 2–36 without floating-point loss.
Input Text or UTF-8 file
Output Copy or download the actual result
Unit Converter
Convert length, mass, data size, duration and temperature with explicit units.
Input Amount
Output Copy or download the actual result
Loan Schedule Calculator
Calculate fixed monthly repayments and download a complete amortization schedule.
Input Loan amount
Output Copy or download the actual result
Invoice Builder
Create a printable HTML invoice from line items, using exact integer-cent arithmetic.
Input Text or UTF-8 file
Output Copy or download the actual result
Bill Split & Tip Calculator
Add a tip and divide a bill evenly, with every cent accounted for.
Input Bill, tip percentage and number of people
Output Readable total and exact shares