Math
Percentage calculator
Find a percentage, work out a change, or put two numbers in perspective.
Coming soon
The toolkit
A little help, right here.
Find a calculator or utility for the task at hand.
Browse tools
13 tools · Upcoming tools are marked below
Power & UPS
Power Consumption Calculator
Estimate daily and period electricity use in kWh, with optional cost in your selected currency.
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Storage
Backup Storage Calculator
Estimate retained full and incremental backup storage, compression savings, and capacity headroom.
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Networking
Bandwidth Calculator
Plan concurrent user or device bandwidth and add a safety margin in Mbps or Gbps.
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Networking
Internet Download Time Calculator
Estimate how long a file takes to download from its size, internet speed, and transfer efficiency.
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Security & surveillance
CCTV Storage Calculator
Estimate camera recording storage and plan disk capacity in GB and TB.
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Security & surveillance
CCTV Bandwidth Calculator
Estimate camera network traffic and upload capacity in Mbps or Gbps, with adjustable overhead.
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Networking
PoE Power Budget Calculator
Compare device power demand with a switch PoE budget, including safety margin, remaining watts, and utilization.
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Storage
RAID Calculator
Estimate RAID 0, 1, 5, 6, and 10 usable capacity, redundancy overhead, and disk-failure tolerance.
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Power & UPS
UPS Runtime Calculator
Estimate battery backup time from voltage, Ah, battery count, and load watts, with adjustable efficiency and usable capacity.
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IT Infrastructure
Data Transfer Time Calculator
Estimate upload, download, file copy, and backup duration with clear bit/byte conversions and adjustable transfer efficiency.
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Converters
Unit converter
Convert everyday lengths, weights, and temperatures with confidence.
Coming soon
Text
Word counter
Get a clear count of the words and characters in your text.
Coming soon