
About
This utility app assists IT professionals in calculating and comparing data storage needs for big data and SIEM solutions. It converts various data sizes and rates, estimates storage capacity, and helps size log management systems.
What's New in Logcaliper
3.1.0
October 3, 2026
Threshold, a game. Data sizes fall one at a time and you sort each against a line: more than 1 GB? More than a Blu-ray? More than a day of one firewall's logs? Smaller goes left, bigger goes right, before it hits the floor. Three lives, and every miss shows the real number. The items are the app's own figures: the comparison catalogue, from a page of text to a gram of DNA, and log volumes worked out exactly as the Storage screen does: a day of one firewall's logs, a year of them, a day from 1,000 Windows laptops. Find it on the About tab; the row replaces the link to the web quiz, and the game is also at logcaliper.app/threshold/. Best score kept on the device; copy a line to share it. Also in this release: • Under a conversion to or from a bit or byte rate, a new line says what share of an Ethernet link that stream is: 240 Mbit/s reads as 24% of 1G Ethernet. Payload only, not line rate with framing. The long-press copy includes it. • Switching decimal and binary now recalculates the answer at once. Before, the labels changed and the number stayed. • Four new sizes to compare against: the weights of an 8B model (16 GB), a 70B model (140 GB) and a 405B model (810 GB), all at 16-bit precision, and a 15-trillion-token training set (44 TB). Chosen by parameter count rather than product name so they will not date. They replace the 45 GB "AI models" entry. • The PCI DSS retention labels now cite requirement 10.5.1 of v4.0.1 (12 months kept, 3 months immediately available) instead of 10.7 of the retired v3.2.1. • Small fixes: the TO SCALE strip on the Storage screen is laid out again on every recalculation, and the comparison headers fit their space.
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FAQ
What is Logcaliper used for?
Logcaliper is a utility app designed to help IT professionals understand data volumes for big data and SIEM solutions. It converts data sizes and rates, estimates storage capacity, and aids in sizing log management systems.
What devices is Logcaliper available on?
Logcaliper is available for free on iPhones and iPads, requiring iOS 15 or higher.
Does Logcaliper have ads?
No, Logcaliper is ad-free, providing an uninterrupted experience for its users.
How often is Logcaliper updated?
The latest version, 2.6.4, was last updated on February 6, 2026. While specific update frequency isn't detailed, the app has been around since 2010, indicating ongoing development.
Can Logcaliper estimate storage for distributed systems?
Yes, Logcaliper can estimate the size of distributed storage clusters, such as the number of Hadoop nodes required.
What kind of data can Logcaliper convert?
Logcaliper can convert various data sizes (bits and bytes) and message rates per second, hour, day, month, or year.
Does Logcaliper offer different conversion modes?
Yes, Logcaliper allows users to choose between decimal or binary conversion modes for data units.
What is the user rating for Logcaliper?
Logcaliper has a high user rating of 4.8 stars based on 5 ratings, indicating positive user sentiment.





