Technology Calculators
AI Token Calculator
Estimate the token count of a block of text using the character and word-based approximations LLM providers publish, before pricing it with a cost calculator.
Aspect Ratio Calculator
Simplify a width and height to their reduced aspect ratio, or solve for a missing width or height once a target ratio like 16:9 or 4:3 is fixed exactly.
Audio Bitrate Calculator
Calculate uncompressed audio bitrate from sample rate, bit depth, and channel count, or convert between bitrate and file size for any audio duration length.
AWS EC2 Cost Calculator
Estimate the monthly cost of an AWS EC2 instance from its hourly rate and hours run, plus attached EBS storage, using current rates you supply yourself.
Azure VM Cost Calculator
Estimate the monthly cost of an Azure virtual machine from its hourly rate and hours run, plus attached managed disk storage, using your own current rates.
Bandwidth Calculator
Convert between bandwidth units, calculate the transfer time for a file at a given connection speed, or find the bandwidth needed to hit a target time.
Bandwidth Usage Calculator
Project daily, monthly, and yearly data usage from a sustained bandwidth rate and hours of use per day, useful for checking against a monthly data cap.
Battery Life Calculator
Estimate a battery's runtime by dividing its rated capacity in mAh or Wh by the device's current or power draw, adjusted for a conversion efficiency factor.
Binary Calculator
Convert a value between binary, octal, decimal, and hexadecimal, or perform binary arithmetic and bitwise AND, OR, and XOR operations on two numbers directly.
Capacitor Charge Calculator
Calculate the electrical charge in coulombs and energy in joules stored by a capacitor from its capacitance and voltage rating using standard formulas.
Charging Time Calculator
Estimate real-world battery charging time from battery capacity, charger current, start and target charge percentage, and a charging efficiency factor.
Claude Token Cost Calculator
Calculate the cost of an Anthropic Claude API call from input and output token counts, using built-in model rates or a custom price you enter yourself.
Cloud Cost Calculator
Estimate a cloud workload's total monthly cost by combining instance compute time, storage, and data transfer charges using the rates that you supply.
Cloud Storage Calculator
Calculate the monthly and total cost of cloud storage from a storage amount, a per-GB rate, and a duration in months, using the decimal GB convention.
Download Time Calculator
Calculate how long a file download will take from its size and your connection speed, converting between the bit-based speed and byte-based file size.
File Size Calculator
Convert a file size between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes under either the binary or decimal unit convention you pick.
Frame Rate Calculator
Convert between frame rate, duration, and total frame count for video and animation, solving for whichever value is missing from the other two figures.
Gemini Token Cost Calculator
Calculate the cost of a Google Gemini API call from input and output token counts, using built-in model rates or a custom price you enter yourself directly.
Google Cloud Pricing Calculator
Estimate the monthly cost of a Google Cloud Compute Engine instance from its hourly rate and hours run, plus its attached persistent disk storage rate.
IP Subnet Calculator
Calculate an IPv4 network's address, broadcast address, wildcard mask, and usable host range from an IP address and its subnet mask or CIDR prefix length.
Monitor PPI Calculator
Calculate a monitor's pixel density in PPI from its resolution and diagonal screen size, showing exactly how sharp the display will look at that size.
OpenAI Token Cost Calculator
Calculate the cost of an OpenAI API call from input and output token counts, using built-in model rates or a custom price you enter yourself directly.
Pixel Aspect Ratio Calculator
Calculate a video's pixel aspect ratio from its storage resolution and intended display ratio, or recover the display ratio from a known PAR value directly.
Pixel Density Calculator
Calculate a screen's pixel density in PPI from its resolution and diagonal size, the figure that determines how sharp text and images actually appear.
QR Code Capacity Calculator
Look up the maximum alphanumeric character capacity for a QR code version and error correction level from the official ISO/IEC 18004 specification table.
RAID Capacity Calculator
Calculate the usable storage capacity and fault tolerance of a RAID 0, 1, 5, 6, or 10 array from the number of disks and the size of each individual disk.
Resistor Color Code Calculator
Decode a 4-band or 5-band resistor color code into its exact resistance value and tolerance percentage using the standard electronics color code system.
Screen Resolution Calculator
Calculate the total pixel count and simplified aspect ratio of a resolution, and check it against recognized standard names like 1080p, QHD, and 4K UHD.
Screen Size Calculator
Convert between a screen's diagonal size, pixel resolution, and aspect ratio, solving for the physical width, height, or pixel density that you need to know.
SSD Lifespan Calculator
Estimate how many years an SSD will last before reaching its rated endurance, based on its manufacturer TBW rating and your average daily data written.
Storage Calculator
Convert between bits, bytes, and standard storage units like KB, MB, GB, and TB under either the binary (1024-based) or decimal (1000-based) convention.
Time Complexity Calculator
Estimate the operation count and wall-clock time for a Big-O complexity class at a given input size, from O(1) and O(log n) up through O(n!) and O(2^n).
Video Bitrate Calculator
Calculate the video bitrate needed to hit a target file size for a given duration, after subtracting the audio track's share of the total bitrate used.
The Numbers Behind Modern Tech Decisions
Technology calculations span from low-level computing basics (binary, IP subnetting) to genuinely current concerns like AI token cost and cloud infrastructure pricing that barely existed a few years ago. Thirty-three calculators here cover storage, networking, displays, and the cloud and AI cost math that's become part of everyday technical decision-making.
Popular Technology Calculators
Highlights across cloud computing, storage, and displays:
- AI Token Calculator — estimates the number of tokens a piece of text will consume for LLM API usage.
- Cloud Cost Calculator — estimates monthly cloud infrastructure spend based on compute, storage, and bandwidth usage.
- IP Subnet Calculator — calculates subnet range, usable hosts, and network/broadcast addresses from a CIDR notation.
- Screen Resolution Calculator — calculates aspect ratio, pixel density, and total pixel count for a given resolution and screen size.
- Storage Calculator — converts between storage units and estimates capacity needed for a given data volume.
Why AI Token Cost Isn't the Same as Word Count
Large language models don't process text word by word — they break text into tokens, which can be whole words, parts of words, or even punctuation, and the token count for the same text can vary depending on the specific model's tokenizer and even the language the text is written in. This is exactly why a rough "words divided by some ratio" estimate is only approximate, and why an AI token calculator that actually applies a model's real tokenization logic gives a meaningfully more accurate cost estimate for API usage than word count alone.
Frequently Asked Questions
Why does IP subnetting use CIDR notation instead of just a subnet mask?
CIDR notation (like /24) is a more compact way to express the same subnet mask information, and it directly indicates how many bits are used for the network portion, which is convenient for quickly calculating available host addresses.
Does higher screen resolution always mean better pixel density?
Not on its own — pixel density (PPI) depends on both resolution and physical screen size, so a higher-resolution screen that's also physically larger can have similar or lower pixel density than a smaller, lower-resolution display.
Explore More
Working on machine learning specifically? See the Machine Learning Calculators, or check security-related tech metrics in the Cybersecurity Calculators.