Purchases

Buy Now vs Wait

Will waiting actually save you money?

Use this tool
Cars

Car Affordability Calculator

Price supported by your loan budget; add taxes and fees separately and assess all running costs. Enter your own values; the result updates only when you run the tool.

Use this tool
Date & time

Date Difference Calculator

Signed calendar days from start date up to but excluding end date. Enter your own values; the result updates only when you run the tool.

Use this tool
Money & Debt

Debt vs Save

Attack the balance or grow the cushion?

Use this tool
Career

Job Offer Comparison

Compare offers on what actually matters to you

Use this tool
Unit converters

Length Converter

Convert length through m: value × source factor / target factor. Enter your own values; the result updates only when you run the tool.

Use this tool
Personal finance

Loan Payment Calculator

Fixed monthly payment on a fully amortizing loan; fees are excluded. Enter your own values; the result updates only when you run the tool.

Use this tool
Moving

Move vs Stay

Is the grass actually greener (and cheaper)?

Use this tool
Home

Rent vs Buy

Home ownership or renting — the honest math

Use this tool
Cars

Repair vs Replace Car

One more repair, or a new ride?

Use this tool
Everyday life

Tip Calculator

Tip = bill × chosen percentage. Enter your own values; the result updates only when you run the tool.

Use this tool
Text

Word Counter

Count Unicode word tokens, retaining internal apostrophes. Enter your own values; the result updates only when you run the tool.

Use this tool
Savings & investing

401(k) Contribution Planner

Estimate contributions using your plan match; statutory limits and eligibility are not evaluated. Enter your own values; the result updates only when you run the tool.

Use this tool
Personal finance

50/30/20 Budget Calculator

Split after-tax income into a chosen 50% needs, 30% wants and 20% savings framework. Enter your own values; the result updates only when you run the tool.

Use this tool
Personal finance

APY Calculator

Effective annual yield includes compounding. Enter your own values; the result updates only when you run the tool.

Use this tool
Date & time

Age Calculator

Completed years at your reference date; February 29 anniversaries fall on March 1 in non-leap years. Enter your own values; the result updates only when you run the tool.

Use this tool
Unit converters

Angle Converter

Convert angle through radian: value × source factor / target factor. Enter your own values; the result updates only when you run the tool.

Use this tool
Shopping & value

Annual vs Monthly Subscription

Compare one year of a monthly plan with the annual upfront price. Enter your own values; the result updates only when you run the tool.

Use this tool
Everyday life

Appliance Electricity Cost

Electricity cost = watts / 1000 × usage hours × energy rate. Enter your own values; the result updates only when you run the tool.

Use this tool
Unit converters

Area Converter

Convert area through m²: value × source factor / target factor. Enter your own values; the result updates only when you run the tool.

Use this tool
Images

Aspect Ratio Calculator

Reduce integer width and height by their greatest common divisor. Enter your own values; the result updates only when you run the tool.

Use this tool
Education

Assignment Average Calculator

Total-points course percentage; assignments contribute in proportion to possible points. Enter your own values; the result updates only when you run the tool.

Use this tool
Education

Attendance Rate Calculator

Attendance percentage = sessions attended / sessions scheduled × 100. Enter your own values; the result updates only when you run the tool.

Use this tool
Productivity

Automation Time Savings

Monthly hours saved = per-task time reduction × monthly task count / 60. Enter your own values; the result updates only when you run the tool.

Use this tool
Math & science

Average Calculator

Arithmetic mean = sum of values / count. Enter your own values; the result updates only when you run the tool.

Use this tool
Travel

Baggage Cost Calculator

Baggage budget uses the per-bag fee you enter for every charged direction. Enter your own values; the result updates only when you run the tool.

Use this tool
Food & kitchen

Baker’s Percentage Calculator

Baker’s percentage expresses ingredient mass as a percentage of total flour mass. Enter your own values; the result updates only when you run the tool.

Use this tool
Food & kitchen

Baking Pan Area Scaling

Recipe multiplier for equal batter depth in rectangular pans; baking time is not scaled. Enter your own values; the result updates only when you run the tool.

Use this tool
Debt & credit

Balance Transfer Fee Calculator

Transfer fee = larger of the entered percentage fee or minimum. Enter your own values; the result updates only when you run the tool.

Use this tool
Text

Base64 Text Decoder

Validate standard Base64 and decode its UTF-8 text. Enter your own values; the result updates only when you run the tool.

Use this tool
Text

Base64 Text Encoder

Encode UTF-8 text into standard Base64. Enter your own values; the result updates only when you run the tool.

Use this tool
Everyday life

Battery Runtime Estimate

Ideal runtime = usable watt-hours / device watts; actual load and conversion losses vary. Enter your own values; the result updates only when you run the tool.

Use this tool
Career

Bonus Pay Estimate

Gross bonus = eligible salary × target bonus percentage × payout percentage. Enter your own values; the result updates only when you run the tool.

Use this tool
Business

Break-even Units Calculator

Whole units needed to cover fixed costs at a positive unit contribution. Enter your own values; the result updates only when you run the tool.

Use this tool
Shopping & value

Bulk Purchase Comparator

Compare package unit prices using the same quantity unit. Enter your own values; the result updates only when you run the tool.

Use this tool
Date & time

Business Days Calculator

Count Monday–Friday in the half-open date range; holidays are not excluded. Enter your own values; the result updates only when you run the tool.

Use this tool