Practical examples
Worked examples for this site
Discount plus sales tax
A $100 item with 20% off and 7% tax totals $85.60. Try it →
Bill and tip split
A $120 bill with 20% tip split four ways is $36 each. Try it →
Monthly loan payment
A $10,000 loan at 6% APR for 36 months is approximately $304.22/month. Try it →
Savings growth projection
A $1,000 initial deposit with $100 added monthly at 4% grows over time. Try it →
Percentage change
From 100 to 125 is an increase of 25%. Try it →
Explore the tools
- Discount plus sales tax — Apply a discount before calculating sales tax.
- Bill and tip split — Divide a restaurant bill including a percentage tip.
- Monthly loan payment — Estimate the fixed monthly principal-and-interest payment on an amortizing loan.
- Savings growth projection — Model monthly deposits with fixed hypothetical interest.
- Percentage change — Compare an earlier value with a new value.