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Numbers,
made useful.
Free calculators, invoices, quotes and everyday tools for work, money and wellbeing. All in one place.
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Explore all 73 toolsA useful place to start
Tools for everyday decisions.
Invoice Creator
Create an itemized invoice with a live preview and save as PDF.
Quotation Creator
Create a branded quotation with itemized pricing, terms and a live preview. Save and share as PDF.
Mortgage Calculator
Estimate monthly mortgage payments.
Loan Calculator
Calculate payments, interest and total loan cost.
Period Calculator
Estimate your next three period start dates from your usual cycle length.
Ovulation Calculator
Estimate ovulation and a possible fertile window for a regular cycle.
Pregnancy Due Date Calculator
Estimate your expected delivery date from your last period and cycle length.
BMI Calculator
Calculate body mass index from height and weight.
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Find the right fit.
Use local money tools for your country, or explore everyday tools that work wherever you are. Each guide explains what the tool covers.
Understand the answer
Useful numbers, clear assumptions.
Change the inputs to compare scenarios. Calculator guides explain the formula, show a worked example and describe the limits. Country tax tools state their tax year and supported scope; health tools provide estimates rather than diagnoses.
Calculator inputs and business document drafts stay in your browser. No account is needed, and drafts are not saved when you reload the page.
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