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Tip amounts for common bills

Open Tip Calculator

Tip amounts for common bills
Bill	15%	18%	20%	25%
$10	$1.50	$1.80	$2.00	$2.50
$15	$2.25	$2.70	$3.00	$3.75
$20	$3.00	$3.60	$4.00	$5.00
$25	$3.75	$4.50	$5.00	$6.25
$30	$4.50	$5.40	$6.00	$7.50
$35	$5.25	$6.30	$7.00	$8.75
$40	$6.00	$7.20	$8.00	$10.00
$45	$6.75	$8.10	$9.00	$11.25
$50	$7.50	$9.00	$10.00	$12.50

Tip amounts for common bills (continued)
Bill	15%	18%	20%	25%
$55	$8.25	$9.90	$11.00	$13.75
$60	$9.00	$10.80	$12.00	$15.00
$65	$9.75	$11.70	$13.00	$16.25
$70	$10.50	$12.60	$14.00	$17.50
$75	$11.25	$13.50	$15.00	$18.75
$80	$12.00	$14.40	$16.00	$20.00
$85	$12.75	$15.30	$17.00	$21.25
$90	$13.50	$16.20	$18.00	$22.50
$95	$14.25	$17.10	$19.00	$23.75
$100	$15.00	$18.00	$20.00	$25.00

The tip only, before tax. Add it to the bill for the total. Common examples, not a ranking.

Common metric and imperial conversions

Open Metric & Imperial Converter

Common metric and imperial conversions
Convert	1	5	10	50	100	1,000	10,000
km to mi	0.621	3.107	6.214	31.069	62.137	621.371	6,213.712
mi to km	1.609	8.047	16.093	80.467	160.934	1,609.344	16,093.44
kg to lb	2.205	11.023	22.046	110.231	220.462	2,204.623	22,046.226
lb to kg	0.454	2.268	4.536	22.68	45.359	453.592	4,535.924
L to gal	0.264	1.321	2.642	13.209	26.417	264.172	2,641.721
gal to L	3.785	18.927	37.854	189.271	378.541	3,785.412	37,854.118
cm to in	0.394	1.969	3.937	19.685	39.37	393.701	3,937.008
in to cm	2.54	12.7	25.4	127	254	2,540	25,400
m to ft	3.281	16.404	32.808	164.042	328.084	3,280.84	32,808.399
ft to m	0.305	1.524	3.048	15.24	30.48	304.8	3,048

Rounded to 3 decimal places at most. US units. Common examples, not a ranking.

Sale price after a discount

Open Discount Calculator

Sale price after a discount
Price	10%	20%	25%	30%	40%	50%	60%	70%	75%	80%	90%	95%
$20	$18.00	$16.00	$15.00	$14.00	$12.00	$10.00	$8.00	$6.00	$5.00	$4.00	$2.00	$1.00
$40	$36.00	$32.00	$30.00	$28.00	$24.00	$20.00	$16.00	$12.00	$10.00	$8.00	$4.00	$2.00
$50	$45.00	$40.00	$37.50	$35.00	$30.00	$25.00	$20.00	$15.00	$12.50	$10.00	$5.00	$2.50
$60	$54.00	$48.00	$45.00	$42.00	$36.00	$30.00	$24.00	$18.00	$15.00	$12.00	$6.00	$3.00
$80	$72.00	$64.00	$60.00	$56.00	$48.00	$40.00	$32.00	$24.00	$20.00	$16.00	$8.00	$4.00
$100	$90.00	$80.00	$75.00	$70.00	$60.00	$50.00	$40.00	$30.00	$25.00	$20.00	$10.00	$5.00
$150	$135.00	$120.00	$112.50	$105.00	$90.00	$75.00	$60.00	$45.00	$37.50	$30.00	$15.00	$7.50
$200	$180.00	$160.00	$150.00	$140.00	$120.00	$100.00	$80.00	$60.00	$50.00	$40.00	$20.00	$10.00

Columns are the percent off; cells are the price you pay, before tax. Common examples, not a ranking.

How long common word counts take

Open Word Counter

How long common word counts take
Words	Reading	Speaking
100	30 sec	46 sec
250	1 min 15 sec	1 min 55 sec
500	2 min 30 sec	3 min 51 sec
1,000	5 min	7 min 42 sec
2,000	10 min	15 min 23 sec
5,000	25 min	38 min 28 sec
10,000	50 min	1 hr 17 min

Assumes reading at 200 words a minute and speaking at 130. People vary. Common examples, not a ranking.

Tip Calculator

Metric & Imperial Converter

Discount Calculator

Word Counter

Plain-English explanations

What the terms on a bill, a loan or a bank statement mean, each with an example you can change.

APR
APR stands for annual percentage rate.
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APY
APY stands for annual percentage yield.
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Compound interest
Compound interest is interest earned on your original money and also on the interest it has already earned.
Read the explanation
Unit price
Unit price is the price of one standard unit of a product, such as one ounce, one pound or one sheet.
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