--- title: "ZKBio Time.Net Calculate Attendance: Step by Step | Qyvea" url: https://qyvea.co.ke/zkbio-time-net-calculate-attendance description: "Run Calculate in ZKBio Time.Net to turn raw punches into regular hours, late-in, early-out, absence and overtime. What it needs and how to read the result." updated: 2026-10-20 --- > Markdown copy of https://qyvea.co.ke/zkbio-time-net-calculate-attendance for AI assistants. Prices and stock change; check the live page. 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Calculate applies your timetable and produces the numbers payroll needs. [Shop ZKTeco K40 terminals →](https://qyvea.co.ke/products/zkteco-k40-fingerprint-time-attendance-terminal-67)[Get help on WhatsApp](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20read%20your%20guide%3A%20ZKBio%20Time.Net%3A%20How%20to%20Calculate%20Attendance.%20I%20need%20help%20with%20my%20ZKTeco%20K40%20Pro.) Quick answer Download punches, make sure shifts are assigned, then open Attendance > Calculate, choose the employees and dates and click Calculate. Review the totals, fix mistakes and print reports. **Buy your ZKTeco K40 from Qyvea**: Supplied and installed across Kenya. Delivered within 24 hours once payment is confirmed. [Shop ZKTeco K40 terminals →](https://qyvea.co.ke/products/zkteco-k40-fingerprint-time-attendance-terminal-67)[All attendance terminals](https://qyvea.co.ke/products?cat=biometrics&search=attendance)[Ask Qyvea on WhatsApp](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20read%20your%20guide%3A%20ZKBio%20Time.Net%3A%20How%20to%20Calculate%20Attendance.%20I%20need%20help%20with%20a%20ZKTeco%20K40%20Pro.%20Please%20quote%20me.) ## Key takeaways - Needs downloaded punches and an assigned shift. - Select the right employees and dates. - Re-run after any edit. - Check a sample by hand. ## Before you calculate - Punches downloaded ([download guide](https://qyvea.co.ke/zkbio-time-net-download-attendance-records)). - Timetable and shift built and assigned ([setup](https://qyvea.co.ke/zkbio-time-net-create-timetable-and-shift)). - Holidays and leave entered if relevant. ## Run it 1. Open **Attendance > Calculate**. 2. Select the employees or departments. 3. Set the start and end dates. 4. Click **Calculate**. 5. Wait for the confirmation message. **Figure 1.** Calculate applies your timetable rules to the punches. ## Read the results - **Regular hours:** time inside the timetable. - **Late-in:** minutes after check-in beyond grace. - **Early-out:** leaving before check-out beyond grace. - **Absence:** scheduled days with no valid punches. - **Overtime:** extra time if OT is enabled. ## Spot-check Pick three employees, compare their raw punches in Attendance > Transaction with the calculated hours and make sure the rules behave as you expect. Fix timetable grace minutes if everyone looks late by the same amount. ## When results look wrong Common causes are no shift assigned, a wrong terminal clock, missing punches or a punch window that excludes real times. See [absent though punched](https://qyvea.co.ke/zkbio-time-net-absent-though-punched) and [wrong punch times](https://qyvea.co.ke/zkteco-k40-pro-wrong-time-punches). ## A typical scenario A manager insisted staff arrived on time but reports showed lateness. Comparing raw punches with the result showed the timetable check-in was 8:00 while the office opened at 8:30. Fixing the timetable and recalculating corrected the whole month. *Illustrative example based on common cases, not a named customer.* ## Common mistakes - Calculating without assigning a shift. - Calculating before downloading. - Selecting the wrong dates. - Not rechecking after edits. - Trusting results without a spot-check. ## Quick checklist 1. Punches downloaded 2. Shifts assigned 3. Holidays entered 4. Correct dates selected 5. Calculate run 6. Spot-check three people ## Frequently asked questions Do I have to calculate every time? Yes, after new punches, edits or rule changes. Does Calculate change the raw punches? No. It only produces results from them. Can I calculate for one person? Yes, select just that employee. How far back can I calculate? As far as you have punches and shift assignments. This guide is part of our [ZKTeco K40 and ZKBio Time.Net series](https://qyvea.co.ke/zkteco-k40-zkbio-time-net-guides-kenya). For the full start-to-finish walkthrough with screenshots, read [How to Configure a ZKTeco K40 Pro with ZKBio Time.Net](https://qyvea.co.ke/how-to-configure-zkteco-k40-pro-zkbio-time-net). ZKTeco and ZKBio are trademarks of ZKTeco Inc. Menu names on the K40 Pro and in the software vary slightly by firmware and software version; where yours differ, look for the nearest match. Qyvea is a ZKTeco reseller and installer in Kenya. **Want us to do this for you?**: We supply, install, configure the software, enrol your staff and train your HR team. [Shop ZKTeco K40 terminals →](https://qyvea.co.ke/products/zkteco-k40-fingerprint-time-attendance-terminal-67)[All attendance terminals](https://qyvea.co.ke/products?cat=biometrics&search=attendance)[Ask Qyvea on WhatsApp](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20read%20your%20guide%3A%20ZKBio%20Time.Net%3A%20How%20to%20Calculate%20Attendance.%20I%20need%20help%20with%20a%20ZKTeco%20K40%20Pro.%20Please%20quote%20me.) ## Why customers choose Qyvea **Genuine brands**: Manufacturer warranty on what we sell, so you are not gambling on the box. **One team, start to finish**: The people who advise you also install and support it. **Fast answers**: WhatsApp replies usually within 30 minutes, and delivery within 24 hours in Nairobi. **Easy to buy**: Pay by M-Pesa, bank transfer or card. Free delivery in Nairobi on orders over KES 5,000. **Risk taken off you**: 7-day returns and exchanges on products, and a workmanship warranty on installations. **Customers say so**: Rated 4.6/5 from 57 Google reviews. **Your next step takes one minute:** send us a photo of the place on WhatsApp and we will tell you what it needs. ## Related articles [Biometrics & Attendance · Guide Using ZKBio Time.Net for Payroll: Hours, Overtime and Absence A monthly routine that turns attendance data into correct pay. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/zkbio-time-net-payroll-attendance-hours)[Biometrics & Attendance · Guide ZKBio Time.Net: Monthly Summary and Time Card Reports One page per employee or one table for the team: the monthly view HR wants. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/zkbio-time-net-monthly-summary-report)[Biometrics & Attendance · Troubleshooting ZKTeco K40 Pro Showing Wrong Punch Times: Fix and Recover Fix the clock, then clean up the records already stamped wrongly. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/zkteco-k40-pro-wrong-time-punches) ### Related guides [All ZKTeco K40 and ZKBio guides](https://qyvea.co.ke/zkteco-k40-zkbio-time-net-guides-kenya)[Configure a K40 Pro with ZKBio Time.Net](https://qyvea.co.ke/how-to-configure-zkteco-k40-pro-zkbio-time-net)[Use ZKTeco attendance software](https://qyvea.co.ke/how-to-use-zkteco-attendance-software) ### Related products [ZKTeco K40 terminal](https://qyvea.co.ke/products/zkteco-k40-fingerprint-time-attendance-terminal-67)[ZKTeco K40 price in Kenya](https://qyvea.co.ke/zkteco-k40-price-in-kenya)[ZKTeco attendance machines](https://qyvea.co.ke/zkteco-attendance-machine-price-in-kenya) ### Related services [Biometrics & attendance](https://qyvea.co.ke/biometrics)[Biometric attendance systems](https://qyvea.co.ke/biometric-attendance-systems-kenya) [← Previous**ZKBio Time.Net: How to Download Attendance Records (Get Transaction)**](https://qyvea.co.ke/zkbio-time-net-download-attendance-records)[Next →**: ZKBio Time.Net: The Daily Attendance Report**](https://qyvea.co.ke/zkbio-time-net-daily-attendance-report) ## Need this system installed? 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