Top calculators

Ranked by real visitor activity — over the last 30 days.

100 calculators

# Calculator Category
1 Gallons to Kilograms (gal to kg) Converter Convert
2 Kg to Liters Converter Convert
3 Expiration Date Calculator Time & Date
4 Lbs to PSI Calculator Convert
5 Lunar Age Calculator Time & Date
6 Tree Age Calculator (DBH method) Nature
7 Taper Calculator (TPF, Angle, Ratio) Home
8 Unicode Text Converter Convert
9 Mg to Teaspoon Converter Convert
10 mmol/L to mg/dL Converter Health
11 Kg to Ounce Converter Convert
12 Mg to Tablespoon Converter Convert
13 MAGI Calculator (Modified Adjusted Gross Income) Money
14 Birth From Death Date Calculator Everyday
15 Cubic Meter to Ton Converter Convert
16 Punch Force Calculator Home
17 Mcg to IU Converter (Vitamins A, D, E) Health
18 Kg to Gallons Converter Convert
19 Pint to Pound Converter Convert
20 Unit Price Calculator Everyday
21 Kg to mL Converter Convert
22 Stairs Calorie Calculator Health
23 kPa to mmHg Conversion Calculator Convert
24 AC Tonnage Calculator - HVAC Sizing by Square Feet Home
25 Screen Size Converter Convert
26 mL to Grams Converter Health
27 Mcg to mL Converter Convert
28 ml to kg Converter Convert
29 Cholesterol Ratio Calculator Health
30 Rate of Return Calculator Money
31 Months Between Dates Calculator Time & Date
32 Pie Chart Calculator (Percentages and Degrees) Science
33 EER Calculator - Estimated Energy Requirement Health
34 Engine Hours to Miles Converter Everyday
35 Garlic Converter Everyday
36 Hematocrit / Hemoglobin Calculator Health
37 Tree Value Calculator (Timber Value Estimator) Nature
38 Bag Capacity Everyday
39 Basal Area Calculator (Forestry, DBH & Prism) Nature
40 Day Converter - Days to Hours, Weeks, Years Convert
41 Fence Perimeter Calculator Home
42 Hydroelectric Power Calculator (Head, Flow, η) Nature
43 Miter Angle Calculator Home
44 Days to Months Converter Convert
45 mL to Teaspoons Converter Convert
46 Grams to Teaspoons Converter Health
47 Body Fat Calculator (US Navy Method) Health
48 Inches to Fraction Calculator Convert
49 Quarts to Pounds Converter Convert
50 Nm to in-lbs Converter Convert
51 Download Time Calculator Everyday
52 Cents to Dollars Converter Convert
53 Calories Burned Weight Lifting Calculator Health
54 Gram to Liter Conversion Convert
55 Graduation Year Calculator Time & Date
56 CC to Oz Converter Convert
57 K/D Ratio Calculator Everyday
58 Army Body Fat Calculator (AR 600-9) Health
59 mg to cc Converter Convert
60 Sand Calculator Home
61 Calories Burned by Heart Rate Health
62 EU to US Shoe Size Converter Everyday
63 Foot to Centimeter Converter Convert
64 Bar to PSIG Converter Convert
65 Gallons Per Minute (GPM) Calculator Home
66 Hectares to Acres Converter Convert
67 Hours and Minutes Calculator Time & Date
68 Weekly Pay Calculator Money
69 BC to AD Calculator Time & Date
70 HP to Amps Calculator Science
71 Mil to MM Conversion Convert
72 Gallons Per Square Foot Calculator Home
73 psi to Inches of Water Conversion Calculator Convert
74 Water Density Calculator Science
75 Pediatric Dose Calculator Health
76 Gr to Tsp Converter Convert
77 Least to Greatest Calculator Science
78 Resolution Scale Calculator Everyday
79 Chemical Name Lookup (Formula ↔ Name) Science
80 KSI to PSI Conversion Calculator Convert
81 Relative Error Calculator Science
82 Gallon to Tons Converter Convert
83 Imperial to Metric Conversion Calculator Convert
84 ACR Calculator - Urine Albumin-Creatinine Ratio Health
85 Margin with Discount Calculator Money
86 Boiling Point Calculator (Altitude & Pressure) Science
87 DC Wire Size Calculator Science
88 Foot-Pounds of Energy Calculator Science
89 Cholesterol Units Converter Health
90 Rolling Offset Calculator Home
91 Date to Date Calculator Time & Date
92 Number to Billion Converter Convert
93 Acceptance Rate Calculator Everyday
94 Appliance Energy Cost Calculator Nature
95 Atom Calculator Science
96 Barometric Pressure Conversion Convert
97 Bird Age Calculator (Bird Years to Human Years) Nature
98 Bulb Spacing Calculator (Tulips, Daffodils, Crocus) Nature
99 Cat Age Quiz Nature
100 Child Cost Calculator Everyday