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187 Free Calculators 🎯
Congratulations, you just found the most random collection of calculators available on the Internet! Are you a hardcore geek? We'll help you pick a motor for your drone. A travel junkie? Use our calculator to choose the optimal sunscreen SPF for holidays in Bali. A keen photographer? We'll help you plan out a perfect star time lapse. A student? You can't go wrong with our education calculators. We have it all, from the aspect ratio calculator to the Minecraft circle calculator, as long as there's a formula for it!
Education Calculators
14 calculators
ACT Score Calculator
Classroom Spacing Calculator - Coronavirus
College GPA Calculator
Final Grade Calculator
GPA Calculator
GPA Calculator Pakistan
Grade Calculator
GWA Calculator – General Weighted Average
High School GPA Calculator
IELTS Score Calculator
Impact Factor Calculator
PTE Score Calculator
Semester Grade Calculator
Test Grade Calculator
Photo and Video Calculators
28 calculators
3D Render Calculator
Aspect Ratio Calculator
Blink-free Photo Calculator
Camera Field of View Calculator
Contrast Ratio Calculator
Crop Factor Calculator
Depth of Field Calculator
Exposure Calculator
Film Calculator
Focal Length Calculator
Frames to Timecode Calculator
Hyperfocal Distance Calculator
Image File Size Calculator
Image Ratio Calculator
Magnification of a Lens Calculator
Pixels to Print Size Calculator
PPI Calculator (Pixels Per Inch)
Projector Calculator
Resolution Scale Calculator
Screen Size Calculator
Shutter Speed Calculator
Timecode to Frames Calculator
Time Lapse Calculator
TV Mounting Height Calculator
TV Size Calculator
Vertical Exaggeration Calculator
Video File Size Calculator (by format)
Video Frame Size Calculator
Music Calculators
21 calculators
Audio File Size Calculator
BPM Calculator
Chord Calculator
Chord Finder
Chord Inversion Calculator
Chord Progression Generator
Chord Transposer
Delay and Reverb Calculator
Fret Calculator
Guitar String Tension Calculator
Harmonic Series Calculator
Key Signature Calculator
Music Duration Calculator
Music Interval Calculator
Music Scale Calculator
Music Transposition Calculator
Note Frequency Calculator
Port Length Calculator
Semitone Calculator
Speaker Box Calculator
Vocal Range Calculator
Tech and Electronics Calculators
34 calculators
3D Printing Cost Calculator
Amdahl's Law Calculator
Battery Capacity Calculator
Battery Life Calculator
Battery Size Calculator
Cable Impedance Calculator
Chmod Calculator
CIDR Calculator
Crosstalk Calculator
Drone Flight Time Calculator
Drone Motor Calculator
Duty Cycle Calculator
eDPI Calculator
Floating-Point Calculator
GSD Calculator – Ground Sample Distance
Hamming Code Calculator
Hamming Distance Calculator
Impedance Matching Calculator
LM317 Calculator
Logic Gate Calculator
Morse Code Translator
Op-Amp Gain Calculator
Parity Bit Calculator
Password Entropy Calculator
PCB Impedance Calculator
PCB Trace Current Calculator
PCB Trace Resistance Calculator
PCB Trace Width Calculator
Pi Attenuator Calculator
Propagation Delay Calculator
RAID Calculator
RAM Latency Calculator
RF Unit Converter
Total Harmonic Distortion Calculator
Internet and Network Calculators
9 calculators
Bandwidth Calculator
Bandwidth Delay Product Calculator
Baud Rate Calculator
Data Transfer Calculator
Download Time Calculator
IP Subnet Calculator
Streaming Bitrate Calculator
Upload Time Calculator
Uptime Calculator
Video Games Calculators
10 calculators
Impostor Odds Calculator – Among Us
KD Calculator (Kill/Death Ratio)
Minecraft Circle Generator
Minecraft End Portal Finder
Minecraft Stack Calculator
Nether Portal Calculator
Pokémon Go Candy Calculator
Pyramid Block Calculator
Rust Decay Calculator
The Witcher: Monster Slayer Calculator
Logistics Calculators
7 calculators
Seasons and Holidays Calculators
10 calculators
Christmas Tree Calculator
Christmas Countdown Calculator
Easter Calculator
Vampire Apocalypse Calculator
Mayan Calendar Converter
New Year's Resolutions Calculator
Snowman Calculator
Trick-or-Treat Calculator
White Christmas Calculator
Zombie Invasion Calculator
Earth and Weather Calculators
8 calculators
Other Miscellaneous Calculators
30 calculators
Age on Other Planets Calculator
Angle of Impact Calculator
Aquarium Calculator
Aquarium Glass Thickness Calculator
Recruitment Process Duration Calculator
Day of the Week Calculator
Diamond Weight Calculator
Encounter Calculator 5e
Engagement Rate Calculator
Flag Calculator | USA
Gender Pay Gap Calculator
Cost of Hiring an Expert vs. Hiring a Fresher Calculator
HP Calculator 5e – Dungeons & Dragons
Matched Betting Calculator
NaNoWriMo Calculator
Oxygen Tank Duration Calculator
Pay Gap Calculator
PERT Calculator
Pizza Tip Calculator
Point Buy Calculator 5e
Poker EV Calculator
Poker Odds Calculator
Rounds per Minute Calculator
Salt Dough Calculator
Sandbox Calculator
Dating Theory Calculator
Streaming Services' Royalties Calculator
Tip Calculator
Tip from Net Price Calculator
Travel Expenses
Redundant Calculators
16 calculators • Alternative versions for easier discovery
16:10 Aspect Ratio Calculator
16:9 Aspect Ratio Calculator
4:3 Aspect Ratio Calculator
Carat Weight Calculator
CSS Aspect Ratio Calculator
Days Until Fall Calculator
Days Until Valentine's Day Calculator
Diamond Carat Calculator
Even Parity Bit Calculator
mm to carat conversion
New Year Countdown Calculator
Odd Parity Bit Calculator
Parity Calculator
Pixel Aspect Ratio Calculator
Portrait Aspect Ratio Calculator
Screen Ratio Calculator
Tools for Every Interest & Hobby
Diverse Topics
From education to gaming to photography
For Geeks & Enthusiasts
Technical and creative tools
Unique & Fun
Calculators you won't find elsewhere
Always Free
No registration or payment needed
The Ultimate Random Calculator Collection
And if we don't have it yet (and you think we should), drop us a line - we'll create a calculator just for you! Our collection of 187 miscellaneous calculators spans an incredible range of topics and interests. Whether you're a student calculating your GPA, a photographer planning the perfect time-lapse, a musician transposing chords, a gamer optimizing your Minecraft builds, or just someone curious about when the next zombie apocalypse might happen (spoiler: it's calculable!), we've got you covered.
From practical tools like GPA calculators, aspect ratio calculators, and tip calculators to fun and quirky ones like the vampire apocalypse calculator, Minecraft circle generator, and the dating theory calculator, this category proves that if there's a formula for it, we can make a calculator for it!
For Students & Educators
- ✓ GPA and grade calculators
- ✓ Test score calculators (ACT, IELTS, PTE)
- ✓ Semester and final grade tools
- ✓ Classroom spacing calculators
For Creatives & Hobbyists
- ✓ Photography: exposure, time-lapse, depth of field
- ✓ Music: chord progression, BPM, transposition
- ✓ Gaming: Minecraft, D&D, Pokémon Go
- ✓ Video: aspect ratio, file size, timecode
For Tech Enthusiasts
- ✓ Drone flight time and motor calculators
- ✓ Battery capacity and life calculations
- ✓ PCB trace and impedance tools
- ✓ Network bandwidth and IP subnet
- ✓ 3D printing cost calculator
For Fun & Holidays
- ✓ Christmas countdown and tree calculator
- ✓ Zombie and vampire apocalypse calculators
- ✓ Trick-or-treat and snowman calculators
- ✓ Easter and Mayan calendar converters
- ✓ White Christmas probability
🎯 Did You Know? This category contains some of our most creative and unique calculators! From helping you plan the perfect star time-lapse photography session to calculating exactly how many blocks you need for your Minecraft pyramid, from figuring out the optimal sunscreen SPF for your vacation to determining your vampire apocalypse survival odds – we believe that if it can be calculated, it should be! Have an idea for a calculator we're missing? Let us know, and we'll build it!