I used to be in the HR field. "Compensation" is a term that is being used now-a-days to include both monetary (salary) and non-monetary (remote work) aspects. Depending on what benefits this company offers, you can include in your "total compensation" package your salary, any insurance that is provided (health, dental, accidental death and dismemberment, life insurance, etc.), as well as holidays and PTO (both vacation and sicks days), and other small things (free snack, set.c.
The salary and holidays/PTO are easy to calculate. For insurance, I would ask for a "Benefits Guide" or a "plan outline" that would show the portion of what the company would pay and what you would pay. Take health insurance for example. For a High Deductible Plan, you could be paying $30 a paycheck for an individual plan, while the company pays $270. Factor in a wellness plan that most companies offer at a discount of $30 a month (but only if you go to the doctor once a year for a check up, and then do health-related activities and log them), that will save you money. But also have to see what the deductible is, as well as what the max out-of-pocket is, AND what the insurance coverage is. Generally most are either 90/10 or 80/20. What that means is once you hit your deductible, you either pay 10% or 20% of your medical bills until you reach your max-out-of-pocket. 10% could translate to a lot of money. For a 401k, see what percentage they match, as well as what the vesting schedule is. A vesting schedule is what some companies use to keep their employees.
Non-monetary benefits include being able to work remotely, having free snack/drinks at the office, a true work-life balance, casual work environment, culture, etc. All these should to be factored in as well. Hopefully this helps.
EDIT: Your title is "How do I calculate the value of job provided benefits? I want to add to my answer with a question - is this a job that is your dream? If you love, and I mean truly LOVE your job, then the value of that exceeds the monetary values it provides. Just my personal opinion. I've been told that do something you love, and the money will follow.